5152d0c9f7
Foundation for replacing fold's dead/abstract binary encoder with a real
SSA P-Code frontend. Verified root-cause gap: serializeBinaryIR() emits only
data-discovery nodes (sections/strings/imports/exports); the control-flow
BinaryExprKind values (BasicBlock/CallSite/...) are never constructed, so the
Z3-BB encoder's encodable filter is always empty and encodeBinaryBBs never
runs — hence 0 binary Z3 findings. The P-Code pipeline supersedes that path.
Phase 0 — docs/internal/ghidra-pcode-integration-research.md: P-Code opcode
core, the decompiler C++ embedding API (LoadImage/SleighArchitecture/Funcdata),
the CORE+DECCORE+SLEIGH source sets, no-bison finding, and pypcode as build
reference.
Phase 1 — vendored Ghidra decompiler at pinned commit (Ghidra_12.1_build,
7e89d94e34...) under third_party/ghidra-decompiler/ (cpp + AArch64 specs +
Apache-2.0 LICENSE + VENDOR.md + .gitignore for build artifacts). Validated by
hand on this clang-21/macOS toolchain:
- full SSA engine (CORE+DECCORE+SLEIGH, 80 files incl. heritage/funcdata/
action) compiles clean, -std=c++11 -O2, NO BFD, NO bison (generated
parsers are committed upstream; ruleparse isn't in the lib set);
- sleigh compiler builds; AArch64 .slaspec -> .sla compiles;
- tools/pcode_dump.cpp (custom LoadImage, no BFD) lifts the real arm64
sym._div_by_zero_direct to correct P-Code: `mov w9,#0 -> COPY(const 0)`,
`sdiv -> INT_SDIV(w8,w9)` — divisor zero-ness explicit in the data flow,
so the Phase-3 encoder proves div-by-zero trivially, multi-arch.
Not yet meson-wired (next step) and no fold-side IR/encoder yet (Phase 2-3);
this commit is the validated vendor + smoke tool.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
/* ###
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* IP: GHIDRA
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* NOTE: Interface to GNU BFD library which is GPL 3
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/// \file bfd_arch.hh
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/// \brief Specific implementation of Architecture using GNU BFD libraries
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#ifndef __BFD_ARCH_HH__
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#define __BFD_ARCH_HH__
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#include "sleigh_arch.hh"
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#include "loadimage_bfd.hh"
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namespace ghidra {
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extern ElementId ELEM_BFD_SAVEFILE; ///< Marshaling element \<bfd_savefile>
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/// \brief Extension point for building a GNU BFD capable Architecture
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class BfdArchitectureCapability : public ArchitectureCapability {
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static BfdArchitectureCapability bfdArchitectureCapability; ///< The singleton instance
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BfdArchitectureCapability(void); ///< Singleton constructor
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BfdArchitectureCapability(const BfdArchitectureCapability &op2); ///< Not implemented
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BfdArchitectureCapability &operator=(const BfdArchitectureCapability &op2); ///< Not implemented
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public:
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virtual ~BfdArchitectureCapability(void);
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virtual Architecture *buildArchitecture(const string &filename,const string &target,ostream *estream);
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virtual bool isFileMatch(const string &filename) const;
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virtual bool isXmlMatch(Document *doc) const;
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};
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/// \brief Architecture that reads executable files using GNU BFD libraries
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class BfdArchitecture : public SleighArchitecture {
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long adjustvma; ///< How much to adjust the virtual memory address
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virtual void buildLoader(DocumentStorage &store);
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virtual void resolveArchitecture(void);
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virtual void postSpecFile(void);
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public:
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virtual void encode(Encoder &encoder) const;
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virtual void restoreXml(DocumentStorage &store);
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BfdArchitecture(const string &fname,const string &targ,ostream *estream); ///< Constructor
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virtual ~BfdArchitecture(void) {}
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};
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} // End namespace ghidra
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#endif
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